Due to Modgud's death, however, an evil taint spread through the fortress. Realizing that Grim Batol was now uninhabitable, the Wildhammer dwarves sought out a new home in Aerie Peak. This evil taint corrupted the remaining Dark Iron dwarves that had fled the losing battle to the depths of Grim Batol, and warped their decendants into the Skardyn.